Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 2 - Set Theory - 2.3 Venn Diagrams and Set Operations - Exercise Set 2.3: 9

Answer

A' = {6,7,8,9... 20}

Work Step by Step

U = {1,2,3,4...20} A = {1,2,3,4,5} The set A' contains the elements that are not present in the set A. The elements of set A i.e. 1,2,,3,4,5 must not be present in set A. The elements of A' are 6,7,8,9, ... 20. Therefore A' = {6,7,8,9... 20}.
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